Concept explainers
(a)
Interpretation:
The symbol and
Concept introduction:
The periodic table is an arrangement of elements according to their properties, atomic number, and electronic configurations.
The metals are placed at the large lower-left portion of the table. The non-metals are placed at the small upper-right portion of the table. The metalloids are present along the staircase line in the periodic table.
(b)
Interpretation:
The symbol and group number of the period 5 transition element whose atoms have the fewest protons, are to be determined.
Concept introduction:
The periodic table is an arrangement of elements according to their properties, atomic number, and electronic configurations.
The metals are placed at the large lower-left portion of the table. The non-metals are placed at the small upper-right portion of the table. The metalloids are present along the staircase line in the periodic table.
(c)
Interpretation:
The symbol and atomic number of the first metallic chalcogen are to be determined.
Concept introduction:
The periodic table is an arrangement of elements according to their properties, atomic number, and electronic configurations.
The metals are placed at the large lower-left portion of the table. The non-metals are placed at the small upper-right portion of the table. The metalloids are present along the staircase line in the periodic table.
(d)
Interpretation:
The symbol and number of protons of the period 4 alkali metal atom are to be determined.
Concept introduction:
The periodic table is an arrangement of elements according to their properties, atomic number, and electronic configurations.
The metals are placed at the large lower-left portion of the table. The non-metals are placed at the small upper-right portion of the table. The metalloids are present along the staircase line in the periodic table.
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